<!-- 主内容区域 -->
<template>
  <div id="main-container" class="main-container" :class="$store.state.app.collapse?'position-collapse-left':'position-left'">
    <!-- 标签页 -->
    <div class="tab-container">
      <el-tabs class="tabs" :class="$store.state.app.collapse?'position-collapse-left':'position-left'"
               v-model="mainTabsActiveName" :closable="true" type="card"
               @tab-click="selectedTabHandle" @tab-remove="removeTabHandle">
        <el-dropdown class="tabs-tools" :show-timeout="0" trigger="hover">
          <div style="font-size:20px;width:50px;"><i class="el-icon-arrow-down"></i></div>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item @click.native="tabsCloseCurrentHandle">关闭当前标签</el-dropdown-item>
            <el-dropdown-item @click.native="tabsCloseOtherHandle">关闭其它标签</el-dropdown-item>
            <el-dropdown-item @click.native="tabsCloseAllHandle">关闭全部标签</el-dropdown-item>
            <el-dropdown-item @click.native="tabsRefreshCurrentHandle">刷新当前标签</el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
        <el-tab-pane v-for="item in mainTabs"
                     :key="item.name" :label="item.title" :name="item.name">
          <span slot="label"><i :class="item.icon"></i> {{item.title}} </span>
        </el-tab-pane>
      </el-tabs>
    </div>
    <!-- 主内容区域 -->
    <div class="main-content">
      <keep-alive>
        <transition name="fade" mode="out-in">
          <router-view></router-view>
        </transition>
      </keep-alive>
    </div>
  </div>
</template>

<script>
  export default {
    data () {
      return {
      }
    },
    computed: {
      mainTabs: {
        get () { return this.$store.state.tab.mainTabs },
        set (val) { this.$store.commit('updateMainTabs', val) }
      },
      mainTabsActiveName: {
        get () { return this.$store.state.tab.mainTabsActiveName },
        set (val) { this.$store.commit('updateMainTabsActiveName', val) }
      }
    },
    methods: {
      // tabs, 选中tab
      selectedTabHandle (tab) {
        tab = this.mainTabs.filter(item => item.name === tab.name)
        if (tab.length >= 1) {
          this.$router.push({name: tab[0].name})
        }
      },
      // tabs, 删除tab
      removeTabHandle (tabName) {
        this.mainTabs = this.mainTabs.filter(item => item.name !== tabName)
        if (this.mainTabs.length >= 1) {
          // 当前选中tab被删除
          if (tabName === this.mainTabsActiveName) {
            this.$router.push({name: this.mainTabs[this.mainTabs.length - 1].name}, () => {
              this.mainTabsActiveName = this.$route.name
            })
          }
        } else {
          this.$router.push("/")
        }
      },
      // tabs, 关闭当前
      tabsCloseCurrentHandle () {
        this.removeTabHandle(this.mainTabsActiveName)
      },
      // tabs, 关闭其它
      tabsCloseOtherHandle () {
        this.mainTabs = this.mainTabs.filter(item => item.name === this.mainTabsActiveName)
      },
      // tabs, 关闭全部
      tabsCloseAllHandle () {
        this.mainTabs = []
        this.$router.push("/")
      },
      // tabs, 刷新当前
      tabsRefreshCurrentHandle () {
        var tempTabName = this.mainTabsActiveName
        this.removeTabHandle(tempTabName)
        this.$nextTick(() => {
          this.$router.push({name: tempTabName})
        })
      }
    }
  };
</script>

<style scoped lang="scss">
  .main-container {
    padding: 0 5px 5px;
    position: absolute;
    top: 60px;
    left: 1px;
    right: 1px;
    bottom: 0px;
    // background: rgba(56, 5, 114, 0.5);
    .tabs {
      position: fixed;
      top: 60px;
      right: 50px;
      padding-left: 0px;
      padding-right: 2px;
      z-index: 1020;
      height: 40px;
      line-height: 40px;
      font-size: 14px;
      background: rgb(255, 253, 255);
      border-color: rgba(200, 206, 206, 0.5);
      border-left-width: 1px;
      border-left-style: solid;
      /*border-bottom-width: 1px;*/
      /*border-bottom-style: solid;*/
    }
    .tabs-tools {
      position: fixed;
      top: 60px;
      right: 0;
      z-index: 1020;
      height: 40px;
      /*padding: 0 10px;*/
      font-size: 14px;
      line-height: 40px;
      cursor: pointer;
      border-color: rgba(200, 206, 206, 0.5);
      border-left-width: 1px;
      border-left-style: solid;
      border-bottom-width: 1px;
      border-bottom-style: solid;
      background: rgba(255, 255, 255, 1);
    }
    .tabs-tools:hover {
      background: rgba(200, 206, 206, 1);
    }
    .main-content {
      position: absolute;
      top: 45px;
      left: 5px;
      right: 5px;
      bottom: 5px;
      padding: 5px;
      // background: rgba(209, 212, 212, 0.5);
    }
  }
  .position-left {
    left: 200px;
  }
  .position-collapse-left {
    left: 60px;
  }
</style>
